"Dewey Defeats Truman" was an erroneous banner headline on
the front page of the early editions of the Chicago Daily Tribune
(later Chicago Tribune) on November 3, 1948, the day after
incumbent United States president Harry S. Truman won an
upset victory over his opponent, Governor Thomas E. Dewey
of New York, in the 1948 presidential election.
It was one of the greatest upsets in presidential election history
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Thomas Edmund Dewey (1902 – 1971)